Seam ing-machine



UNITED STATES PATENT OEFrcE.

FRANCIS A. WALSH, OF CHICAGO, ILLINOIS.

SEAMING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 225,500, dated March 16, 1 880.

Application filed December 19, 1 379.

To all whom it may concern Be it known that I, FRANCIS A. WALSH, of Chicago, in the county of (look and State of Illinois, have invented new and useful Improvements in Sea-ming- Machines; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawings, forming a part hereof, and in which Figure 1 represents a front elevation of my seaming-machine, and Fig. 2 a side elevation of the same with the flanging attachment. Fig. 3 represents a plan view of the seaming lever and its attachments. Fig. 4. represents a sectional view of a portion of a can-body with a part of its cover applied, ready for operation on my seaming-machine. Fig. 5 represents the portion of a can body and .cover shown in Fig. 4 undergoing the first part of the operation of seaming. Fig. 6 represents the same portion of can body and cover undergoing the second operation of seaming, with the lever G, rollers b and cl, cam f, and dog 9 all in their proper operating positions. Fig. 7 represents the portion of can body and cover in the next and final operation of scaming, as performed by roller 0. Fig.8 represents an attachment to the aforesaid machine for flanging the cans into the shape shown at l of Figs. 4 and 2. Fig. 9 represents an elevation of the disk or rotating step-plate H of Fig. 1; and Fig. 10 represents a perspective view of the cam f, shaft e, roller cl, and lever 'L.

Like letters of reference indicate like parts.

My invention relates to that class of scaming-machines used for seaming the end to the body of sheet-metal cans, and in which revolving disks are employed to hold the can during the process of seaming by means of frictioncontact rollers; and my invention consists in the combination of the several parts, as hereinafter more fully described and claimed.

In the drawings, A represents the pillar or standard of the machine, to one side of which is rigidly attached a side piece, B, for the purpose of properly attaching thereto and work ing the seaming lever O and its auxiliary mechanism, which will be explained in detail plane around its vertical fulcrum E, which is parallel to the vertical shaft M. The relative distance of the fulcrum E and shaft M may be changed, when desired, by sliding the dovetailed blocks F upon each other and securing them firmly at the adjusted position by a setscrew or otherwise. The lever O is also vertically adjustable by means of the tongue and groove ac and set-screw w.

A bracket, D, is firmly attached to the outer or sliding part of said dovetail blocks F, into which is secured the fulcrum E, and which also fbrms a bearing for the rocker-shaft c.

The axes of shaft M and spindle K are in the same vertical line. The spindle Kis held by a bracket, I. Said bracket moves vertically in a slot of the face J of the standard A, and may be firmly secured thereto by a set-screw or otherwise at any desired point. The upper end of the spindle K carries a removable horizontal circular disk or step-plate, H, and the lower end of the spindle is stepped into a lever, 19, which is worked by the treadle 1, so as to raise and lower the disk H.

The disk G is secured to the lower end of the shaft M, and revolves therewith by means of the bevel-gearing N, and is also made removable. To the disk G is also secured an arm, n, which carries a roller, m, the axle of which is at an acute angle (more or less) with the shaft M, and the arm n is slotted, so that the roller m may be set at any desired distance from the center of the shaft M.

The disk H of the spindle K may be replaced by the plate L. (Shown in Figs. 2 and 8.) Said plate L has a notch formed by the lugs a a, which slip vertically over the face J of standard A, so as to prevent its turning on the spindle, and this plate carries two vertical pillars, s 8, upon which is mounted a clamp, t, one'half of which is shown in operation in the sectional elevation of the can Z of Fig. 2.

The operation of my herein-described seaming-machine is as follows: The seaming-lever O is adjusted to the proper height by means of the tongue and groove .90 and set-screw w,

and the bracket I, with its disk H, is also adjusted to correspond to the height of the cans to be made, and the upper disk, G, is selected of the proper size to fit the recess or depression of the previously-stamped cover 70, and

screwed upon the shaft M.

The disk H may have grooves or depressions to fit a variety of sizes of cans; or it may, like the disk G, be made to fit the depression or recess of the bottom of the can, as G does into that of the cover.

The can with its cover (shown in section in Fig. 4) is placed upon the disk or step-plate H, which is then raised by the treadle q to press firmly against the rotating disk G, which thereby imparts its motion to the can and lower disk. The seaming-lever 0 having previously been set at the proper distance for the size of cans to be operated upon, its handle end is brought forward, so as to cause the grooved roller a to bear against the burr of the cover it and turn it under the flange Z,and thus unite the cover 76 and can 1 into the form as shown in Fig. 5. When this operation is completed the handle of the lever O is pushed from the body of the can. This causes the dog 9 on the rear side of the lever to engage with the cam f, which is thereby depressed, and which, being firmly secured to the rocker-shaft 6, causes it to turn and raise the roller d on end of shaft 6, under the flange l. closely against the body of the can, and at the same time the downwardly-inclined roller 1) of the lever O is brought in contact with the revolving can to turn the flange downward and over the roller d and press the parts firmly together, as shown in Fig. 6. After the flange is brought into the form as shown in section in Fig. 6, the handle of the lever is moved still farther, thereby passing the dog 9 beyond the cam f, which causes the rocker-shaft to turn back, and thereby release the roller d and turn it out of the way. The rocker-shaft c is caused to turn back by means of the fixed lever i and spring j, which is attached thereto, or otherwise. Shaft e is placed at an angle more or less inclined to the plane of motion of the lever 0. The continued motion of the lever 0 brings the roller 0 next in contact with the flange as left by the combined operations of the rollers 12 and cl, and, being placed obliquely upward in the lever 0,-presses against the outer edge of the seam and turns it closely against the body of the can, thereby completing the same, as shown .in Fig. 7.

The dog 9 is pivoted to the lever C, so as to rise to the position shown by the dotted lines in passing forward over the cam f, but strikes against the lever in its backward motion, so as to depress the cam, as shown in Fig.6.

When it is desired to flange the cans the spindle K, with its disk H, is removed, and the device shown in plan in Fig. 8 and in elevation in Fig; 2 is put in its place. The can, just high enough above the clamp tfor flanging, is placed thereon, and the clamp closed and firmly held, while the plate L is raised by means of the treadle q, thus causing the top of the can I to press against the roller m of the revolving disk Gr, and thereby turn down over the clamp t the flange l.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

I. In a seaming-machine, the combination of the horizontal and vertical adjustable lever O, carrying the grooved roller a, downwardlyinclined roller 1), and upwardly-inclined roller 0, with the rotary disk G, substantially as shown and described.

2. In a seaming-machine, the combination, with the horizontal and vertical adjustable lever G, carrying the grooved roller a, down wardlyinclined roller b, upwardly-inclined roller 0, and provided with the dog g, of the rockershaft 6, provided with roller 01, cam f, lever t,

and spring j, substantially as shown and described.

3. In a seaming-machine, the horizontal and vertical adjustable seaming-lever O, carrying the seaming-rollers a b 0, dog 9, and rockershaft 6, provided with roller d, cam f, lever i, and spring j, with the rotary disks G and H, 'ertically-adjustable bracket I, and treadle q, substantially as and for the purpose specified.

4. In a seaming-machine, the combination, with rotary disk Gr, provided with flangingroller m, of the vertically-adj ustable bracket I, carrying the plate L, and provided with the clamp 15, substantially as shown and described.

FRANCIS A. WALSH.

Witnesses:

WILLIAM ZIMMERMAN, WM. E. DODGE. 

